Evidence map›Paper›PMID 32748960›Full record

ArticleChemistry (Weinheim an der Bergstrasse, Germany)2021

Hybridorubrins A-D: Azaphilone Heterodimers from Stromata of Hypoxylon fragiforme and Insights into the Biosynthetic Machinery for Azaphilone Diversification.

Kevin Becker, Sebastian Pfütze, Eric Kuhnert, Russell J Cox, Marc Stadler, Frank Surup

Open access · hybridAbstract read
In one paragraph

Article in Chemistry (Weinheim an der Bergstrasse, Germany), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.1field-weighted citation impact, top 8% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 31 citations in OpenAlex.

  1. Review
  2. Article
  3. Cytochalasins from the Ash Endophytic FungusMolecules (Basel, Switzerland) · 2025
    Article
  4. IMA fungus · 2025
    Review
  5. Strong antagonism of an endophyte ofApplied and environmental microbiology · 2024
    Article
  6. Article
  7. Journal of natural products · 2023
    Article
  8. Article
  9. Azaphilones produced by Penicillium maximae with their cell death-inducing activity on Adriamycin-treated cancer cell.Genes and environment : the official journal of the Japanese Environmental Mutagen Society · 2023
    Article
  10. Azaphilone alkaloids: prospective source of natural food pigments.Applied microbiology and biotechnology · 2022
    Review
  11. Article
  12. Core Steps to the Azaphilone Family of Fungal Natural Products.Chembiochem : a European journal of chemical biology · 2021
    Review
  13. Recent Findings in Azaphilone Pigments.Journal of fungi (Basel, Switzerland) · 2021
    Review
  14. Article
  15. Three New Derivatives of Zopfinol fromJournal of fungi (Basel, Switzerland) · 2021
    Article
  16. Article
  17. Article
  18. Unsaturated Fatty Acids Control Biofilm Formation ofAntibiotics (Basel, Switzerland) · 2020
    Article
  19. Simplicilones A and B Isolated from the Endophytic FungusAntibiotics (Basel, Switzerland) · 2020
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 2 institutions in 1 country.

Kevin BeckerDepartment Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.
Sebastian PfützeDepartment Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.
Eric KuhnertInstitute for Organic Chemistry, Leibniz University Hannover, Schneiderberg 1B, 30167, Hannover, Germany.
Russell J CoxInstitute for Organic Chemistry, Leibniz University Hannover, Schneiderberg 1B, 30167, Hannover, Germany.
Marc StadlerDepartment Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.
Frank SurupDepartment Microbial Drugs, Helmholtz Centre for Infection Research GmbH (HZI), Inhoffenstrasse 7, 38124, Braunschweig, Germany.ORCID http://orcid.org/0000-0001-5234-8525
German Center for Infection Research · DELeibniz University Hannover · DE

Funding

Deutsche Forschungsgemeinschaft DFG CO 1328/4-1
6 · The paper itself

Abstract

The diversity of azaphilones in stromatal extracts of the fungus Hypoxylon fragiforme was investigated and linked to their biosynthetic machineries by using bioinformatics. Nineteen azaphilone-type compounds were isolated and characterized by NMR spectroscopy and mass spectrometry, and their absolute stereoconfigurations were assigned by using Mosher ester analysis and electronic circular dichroism spectroscopy. Four unprecedented bis-azaphilones, named hybridorubrins A-D, were elucidated, in addition to new fragirubrins F and G and various known mitorubrin derivatives. Only the hybridorubrins, which are composed of mitorubrin and fragirubrin moieties, exhibited strong inhibition of Staphylococcus aureus biofilm formation. Analysis of the genome of H. fragiforme revealed the presence of two separate biosynthetic gene clusters (BGCs) hfaza1 and hfaza2 responsible for azaphilone formation. While the hfaza1 BGC likely encodes the assembly of the backbone and addition of fatty acid moieties to yield the (R)-configured series of fragirubrins, the hfaza2 BGC contains the necessary genes to synthesise the widely distributed (S)-mitorubrins. This study is the first example of two distant cross-acting fungal BGCs collaborating to produce two families of azaphilones and bis-azaphilones derived therefrom.

Indexed as

BenzopyransPigments, BiologicalAscomycotaFungiazaphiloneBenzopyransPigments, Biologicalbiosynthesisinhibitorsnatural productspolyketidesstructure elucidation

Identifiers

PMID32748960
PMCPMC7898651
OpenAlexW3047306369

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.